<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  
</head>
<body>
  <div id="app">
    <div v-for="(floor,i) in floors">
      <h2>{{floor.title}}</h2>
      <ul>
        <li v-for="(item, index) in floor.items">
          <h3>{{item.name}} 属于几楼：{{i+1}} </h3>
          <p>{{item.price}}</p>
        </li>
      </ul>
    </div>
  </div>
  <script src="./vue.js"></script>
  <script>
    // 定义vm
    const vm = new Vue({
      el: '#app',
      data: {
        floors: [
          {
            title:"一楼",
            items: [
              {
                name: '商品1',
                price: 10
              },
              {
                name: '商品2',
                price: 20
              },
              {
                name: '商品3',
                price: 30
              }
            ]
          },
          {
            title:"2楼",
            items: [
              {
                name: '商品1',
                price: 10
              },
              {
                name: '商品2',
                price: 20
              },
              {
                name: '商品3',
                price: 30
              }
            ]
          }
        ]
      }
    })
  </script>
</body>
</html>